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118 Peitho
Classification: Main-belt Asteroid          SPK-ID: 2000118
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1630438799175118 4.0324e-08  
a 2.437111630114396 5.8676e-09 au
q 2.039755494148453 9.9034e-08 au
i 7.742758484044912 5.4829e-06 deg
node 47.70495100626098 3.3553e-05 deg
peri 33.34682291027406 3.7153e-05 deg
M 359.4038345026819 1.4582e-05 deg
tp 2457402.801314094310
(2016-Jan-15.30131409)
5.6289e-05 JED
period 1389.669609661664
3.80
5.0187e-06
1.374e-08
d
yr
n .2590543806219145 9.3555e-10 deg/d
Q 2.83446776608034 6.8243e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1191  
   data-arc span      52501 days (143.74 yr)  
   first obs. used      1872-03-22  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60879  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:31:10  

Additional Information
 Earth MOID = 1.05934 au 
 Jupiter MOID = 2.43904 au 
 T_jup = 3.473 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.14 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 32
diameter diameter 41.73 km 1.5 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 32
rotation period rot_per 7.8055 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Stanzel, R.; Schober, H.J. (1980) Astron. Astrophys. Suppl. Ser. 39, 3-5.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D. (2009) Minor Planet Bul. 36, 172-176.]
[Behrend, R. (2013) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.2240   0.017 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 32
B-V BV .859 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=3.42, mean=8.57, max.=13.72) deg.
U-B UB .433 mag .030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=3.42, mean=8.57, max.=13.72) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

118 Peitho          Discovered 1872-Mar-15 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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